Metal dusting is still an unresolved issue at high temperatures. Currently, two material-related strategies to mitigate metal dusting are described in the literature. On the one hand, highly alloyed materials are used, which contain large amounts of protective oxide-forming elements, such as Cr, Al, and Si. The second mitigation strategy is based on inhibiting the catalytic effect of Fe, Ni, and Co. These elements all strongly catalyze the formation of solid carbon from the gas phase. Combining the catalytic protection of Cu alloying for metal dusting with protection by a classical alumina/chromia barrier is a native feature that high-entropy alloys (HEAs) can offer. In this study, the behavior of different equiatomic HEAs with and without Al and/or Cu are studied when exposed at 620°C in a highly aggressive metal-dusting environment.

中文翻译：

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含铜高熵合金在恶劣的金属除尘环境中的行为

金属粉尘在高温下仍然是一个未解决的问题。目前，文献中描述了两种与材料相关的减轻金属粉尘的策略。一方面，使用高合金材料，其中包含大量保护性氧化物形成元素，例如 Cr、Al 和 Si。第二种缓解策略是基于抑制 Fe、Ni 和 Co 的催化作用。这些元素都强烈催化气相中固体碳的形成。将铜合金的催化保护与经典的氧化铝/氧化铬屏障保护相结合，是高熵合金 (HEA) 可以提供的天然特性。在这项研究中，研究了在 620°C 下暴露在高度腐蚀性金属粉尘环境中时，含和不含铝和/或铜的不同等原子 HEAs 的行为。